Keyphrases
- test collection
- information retrieval
- question answering
- retrieval effectiveness
- pseudo relevance feedback
- blog opinion retrieval
- data sets
- biomedical information retrieval
- relevance judgments
- expert search
- query performance prediction
- relevance feedback
- case study
- relevance assessments
- relevance judgements
- trec web
- database
- information retrieval systems
- retrieval model
- average precision
- similarity measure
- weighting schemes
- okapi bm
- learning algorithm